gcc/testsuite/objc/execute/bf-common.h

   1 #include <stdlib.h>
   2 #include "../../objc-obj-c++-shared/next-mapping.h"
   3 #ifndef __NEXT_RUNTIME__
   4 #include <objc/encoding.h>
   5 #endif
   6
   7 void print_ivars (Class class)
   8 {
   9   struct objc_ivar_list* ivars = class->ivars;
  10   int i;
  11
  12   for (i = 0; i < ivars->ivar_count; i++) {
  13     struct objc_ivar *ivar = &(ivars->ivar_list[i]);
  14     printf ("ivar '%s', type '%s', offset %d\n",
  15             ivar->ivar_name, ivar->ivar_type, ivar->ivar_offset);
  16   }
  17 }
  18
  19 void compare_structures (Class class, const char* type)
  20 {
  21   struct objc_struct_layout layout;
  22   struct objc_ivar_list* ivars = class->ivars;
  23   int i = 0;
  24   int position;
  25
  26   objc_layout_structure (type, &layout);
  27
  28   while (objc_layout_structure_next_member (&layout))
  29     {
  30       struct objc_ivar *ivar;
  31       const char *ivar_type;
  32
  33       if (i > ivars->ivar_count)
  34         {
  35           printf ("too many ivars in type %s, layout = %s\n",
  36                   type, layout.type);
  37           exit (1);
  38         }
  39
  40       ivar = &(ivars->ivar_list[i]);
  41       objc_layout_structure_get_info (&layout, &position, NULL, &ivar_type);
  42       printf ("real ivar '%s' offset %d\n",
  43               ivar->ivar_name, ivar->ivar_offset);
  44       printf ("computed type '%s' offset %d\n", ivar_type, position);
  45       if (position != ivar->ivar_offset)
  46         {
  47           printf ("offset %d and computed position %d don't match on ivar '%s'"
  48                   " (i = %d)\n",
  49                   ivar->ivar_offset, position, ivar->ivar_name, i);
  50           exit (1);
  51         }
  52       i++;
  53     }
  54
  55   printf ("%d ivars checked\n", i);
  56 }
  57
  58 int main ()
  59 {
  60   struct class_vars
  61     {
  62       @defs (MyObject);
  63     };
  64   int size1, size2;
  65   Class class = objc_get_class ("MyObject");
  66
  67   printf ("type = %s\n", @encode (struct class_vars));
  68   print_ivars (class);
  69
  70   compare_structures (class, @encode(struct class_vars));
  71   if ((size1 = objc_sizeof_type (@encode(struct class_vars)))
  72       != (size2 = sizeof (struct class_vars)))
  73     {
  74       printf ("sizes don't match (computed %d, exact %d)\n", size1, size2);
  75       abort ();
  76     }
  77
  78   exit (0);
  79 }